- 1 - COURSE: MAE 455 – Computer-Aided Design and Drafting PREREQUISITES: MAE 201 & Senior status or consent of instructor WEB PAGE: community.wvu.edu/~bpb011/MAE455 TEXT: 1. Online notes from instructor 2. SolidWorks 2013 online tutorials REFERENCE: K. Lee, Principles of CAD/CAM/CAE Systems, Addison Wesley, 1999. INSTRUCTOR: Dr. Bernhard Bettig Office: ENGR-301 Phone: 304-442-3289 Email: [email protected] Office Hours: M 10-11, 2-5; TRF 10-12; and by appointment A. Course Objectives All major manufacturing companies and their suppliers use CAD software to design parts and evaluate them with respect to fit, form and function. This course introduces students to CAD software in general and SolidWorks 2013 software in particular. Students will learn theory and practice related to solid modeling, assembly modeling, drafting, parametric modeling, freeform surface modeling, and use of CAD models for some downstream engineering activities such as motion simulation and manufacturing. On completing the course, the student will be able to: 1. Use basic and advanced features of current CAD software. 2. Understand how CAD technology can be leveraged in the design process B. Learning Outcomes Upon successful completion of this course, the student will be able to: 1. Design a part or assembly of parts using Computer-Aided Design software. 2. Use parametric modeling techniques to reflect engineering requirements. 3. Apply top-down design principles to model a design. 4. Use motion and interference checking to ensure that parts will not interfere throughout their complete range of motion. 5. Use CAD software collaboratively when designing on a team. 6. Make appropriate selection of CAD functionality to use as tools in the design process. 7. Communicate effectively the geometry and intent of design features. WEST VIRGINIA UNIVERSITY INSTITUTE OF TECHNOLOGY DEPARTMENT OF MECHANICAL ENGINEERING COURSE POLICY & SYLLABUS Fall 2014- 2 -C. Assessment 1. ATTENDANCE Attendance is very important to maximize the learning benefits of this course and therefore regular attendance is expected. Learning is motivated through active discussion, demonstration and practice of the topics being studied. You are responsible for all completed work, schedule adjustments and assigned work addressed during class. Please inform your instructor if you are unable to attend any scheduled class session, and obtain notes from any missed lecture(s). It is your responsibility to make arrangements for any planned or unplanned absences (i.e. interviews, illnesses, personal emergencies, etc.). 2. TUTORIALS Assigned tutorials must be completed in order to understand how to use SolidWorks. Representative parts completed during the tutorials will be required to be submitted to the instructor via email, as specified in handouts. 3. ASSIGNMENTS Every second week an assignment will be given in which students must work individually or in groups to create a CAD model of a part or assembly of their own choosing, centered on the current learning topic. Assignments will be due Wednesdays at the beginning of the lab period. Late work will be charged a 15% penalty for each day late - weekend days do count. Circumstances beyond your control (i.e. illness, computer system failure, weather, acts of nature, etc.) will be addressed as required. You may need to work ahead in the tutorials to finish your assignment. As with written reports and drawings, CAD models must be neat and understandable. Your design intent must be clear so that others can use and modify your designs. Specifically, your work must be: - neat: marks may be lost if it is too difficult or time-consuming to decipher the design intent, - consistent: the grader will assume that all your work is of the same quality as work inspected in a random spot check, - complete: the model must be sufficient to properly manufacture, assemble and/or demonstrate the design. - good modeling practice: while a model may look good on the screen, it must also be technically sound. It must: (i) be fully constrained so that it can be easily modified without error, (ii) use a minimal number of parameters and dimensions, (iii) use a minimal number of operations (features), (iv) have all important dimensions, parameters and features given meaningful names, (v) build on reference geometry as much as is reasonable, (vi) not describe more than one part in the same part file (except for components purchased as a unit).- 3 -4. EXAMS There will be a total of three exams, including the final exam. One of the exams will be an in-lab modeling exam in which students will need to demonstrate proficiency with SolidWorks 2013 with respect to the topics covered. The other two exams will be written exams, covering both theory and practical aspects of CAD. The written exams will be closed-book, closed-notes, but a one page self-written formula sheet will be allowed. The formula sheet may contain figures, equations, formulas, procedures, etc. The final exam will be given according to the school schedule. 5. GRADING Your final grade will be computed based on the deliverables and grading scale in the following tables. Course Deliverables Grading Scale 6 Lab assignments (10 each) 60 A 90-100% Tutorials 5 B 80-89% 2 Written Exams (10 & 15) 25 C 70-79% 1 Modeling Exam 10 D 60-69% Course Total 100 F < 60% D. Syllabus The course will tentatively follow the outline in the following table. Lecture Topics In the Lab Week Tutorial Lab Assignment 1 (8/18) Introduction to CAD Introduction to SolidWorks Intro. to SolidWorks 2 (8/25) Geometric Modeling Sketching Curves Basic Techniques 3 (9/1) Constraining Sketches Advanced Sketching 4 (9/8) Sweep Operations Reverse Engineer an Existing Part 5 (9/15) Datum and Design Intent Surface Operations Equations Drawings 6 (9/22) Equations Drawings Parametric Modeling 7 (9/29) Solid Representations Bottom-up Assembly Modeling Assemblies 8 (10/6) Review for Midterm Team Assembly Modeling- 4 - Lecture Topics In the Lab Week Tutorial Lab Assignment Midterm Exam (10/8) 9 (10/13) Catalogs & CAD Data Formats PDM Systems Team Assembly Modeling 10 (10/20) Free Form Surface Modeling Lofts 11 (10/27)